package exception;

public class TryCatchDemo {
    public static void main(String[] args) {
        System.out.println("程序开始了");

        try{
            String line = null;

            System.out.println(line.length());

        }catch (NullPointerException e){
            System.out.println("出现了空指针异常");
        }

        System.out.println("结束开始了");
    }
}
